Non-flammable aerosol insecticidal compositions

ABSTRACT

A non-flammable aerosol insecticidal composition comprising 0.01 to 20 weight percent of one or more insecticides; 5 to 25 weight percent of one or more compounds selected from the group consisting of acetone, methyl ethyl ketone, and C 1 - to C 8 -alcohol; 5 to 30 weight percent of one or more compounds selected from the group consisting of hydrocarbon propellants, dimethyl ether, and 1,1-difluoroethane; and 60 to 90 weight percent of one or more non-combustible hydrofluorocarbons.

This application is a continuation of U.S. application Ser. No.10/155,606, filed May 23, 2002, the contents of which are herebyincorporated herein by reference.

FIELD OF THE INVENTION

This invention relates to non-flammable aerosol insecticidalcompositions.

BACKGROUND OF THE INVENTION

Pyrethrins refer to a group of closely related esters extracted from thePyrethrum flower (chrysanthemum cinerariaefolium). These compounds areknown to be effective pesticides. Pyrethrins tend to have a relativelylow degree of toxicity to humans and animals and hence are desirable touse for pest control. Aerosol formulations containing pyrethrins havethe added desirability of effectively delivering small amounts ofinsecticide due to the dispersion of active ingredient and penetratingnature of an aerosol spray.

However, a potential issue with aerosols is flammability of the spray,generally due to the flammability of solvents and/or propellants used inthe formulation. During inspection or treatment the applicator may sprayin areas harboring insect population that often are in locations wherepotential ignition sources exist, e.g., pilot lights around stoves, hotwater heaters, etc. Because of these sensitive applications, a needexists for an aerosol formulation that is not flammable.

SUMMARY OF THE INVENTION

The invention provides a non-flammable aerosol insecticidal compositioncomprising: (i) 0.01 to 20 weight percent of one or more insecticides;(ii) 5 to 25 weight percent of one or more compounds selected from thegroup consisting of acetone, methyl ethyl ketone, and C₁- to C₈-alcohol;(iii) 5 to 30 weight percent of one or more compounds selected from thegroup consisting of hydrocarbon propellants, dimethyl ether, and1,1-difluoroethane; and (iv) 60 to 90 weight percent of one or morenon-combustible hydrofluorocarbons.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory and areintended to provide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a tertiary phase diagram showing the concentrations ofacetone, isobutane, and 1,1,1,2-tetrafluoroethane (HFC-134a).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The invention provides a non-flammable aerosol insecticidal compositioncomprising: (i) 0.01 to 20 weight percent of one or more insecticides;(ii) 5 to 25 weight percent of one or more compounds selected from thegroup consisting of acetone, methyl ethyl ketone, and C₁- to C₈-alcohol;(iii) 5 to 30 weight percent of one or more compounds selected from thegroup consisting of hydrocarbon propellants, dimethyl ether, and1,1-difluoroethane; and (iv) 60 to 90 weight percent of one or morenon-combustible hydrofluorocarbons. In a preferred embodiment, thecomposition comprises: (i) 0.01 to 20 weight percent of one or moreinsecticides; (ii) 5 to 25 weight percent acetone; (iii) 5 to 30 weightpercent of one or more compounds selected from the group consisting ofhydrocarbon propellants, dimethyl ether, and 1,1-difluoroethane; and(iv) 60 to 90 weight percent of one or more non-combustiblehydrofluorocarbons. In another preferred embodiment, the compositioncomprises: (i) 1 to 10 weight percent of one or more insecticides; (ii)5 to 20 weight percent acetone; (iii) 5 to 20 weight percent of one ormore compounds selected from the group consisting of hydrocarbonpropellants, dimethyl ether, and 1,1-difluoroethane; and (iv) 65 to 85weight percent of one or more non-combustible hydrofluorocarbons.

The composition preferably comprises one or more insecticides selectedfrom the group consisting of knockdown agents, toxicants, synergists,and insect growth regulators. In another embodiment, the compositionpreferably comprises one or more insecticides selected from the groupconsisting of pyrethrins, prallethrin, imipothrin, d-trans allethrin,esbiol, esbiothrin, tetramethrin, pynamin forte, permethrin,cypermethrin, lambda-cyhalothrin, cyfluthrin, d-phenothrin,esfenvalerate, bifenthrin, piperonyl butoxide, n-octyl bicycloheptenedicarboximide, pyriproxyfen, methoprene, and isomers thereof. Inpreferred embodiments, the composition comprises: (i) pyrethrins; (ii)pyrethrins and piperonyl butoxide; or (iii) pyrethrins, piperonylbutoxide, and n-octyl bicycloheptene dicarboximide (MGK® 264).

The composition preferably comprises 1,1,1,2-tetrafluoroethane. Thecomposition preferably comprises pyrethrins, piperonyl butoxide, n-octylbicycloheptene dicarboximide, and 1,1,1,2-tetrafluoroethane.

The composition preferably comprises one or more hydrocarbon propellantsselected from the group consisting of acetylene, methane, ethane,ethylene, propane, propene, n-butane, isobutane, isobutene, pentane,pentene, isopentane, and isopentene. The composition preferablycomprises one or more hydrocarbon propellants selected from the groupconsisting of isobutane, propane, and n-butane. The compositionpreferably comprises isobutane.

The invention provides a non-flammable aerosol insecticidal compositioncomprising: (i) 0.1 to 5 weight percent pyrethrins; (ii) 0.1 to 10weight percent of one or more synergists; (iii) 7 to 20 weight percentacetone; (iv) 7 to 15 weight percent isobutane; and (v) 60 to 80 weightpercent 1,1,1,2-tetrafluoroethane. The invention also provides anon-flammable aerosol insecticidal composition comprising: (i) 0.1 to 1weight percent pyrethrins; (ii) 0.5 to 2 weight percent piperonylbutoxide; (iii) 1 to 2 weight percent n-octyl bicycloheptenedicarboximide; (iv) 10 to 20 weight percent acetone; (v) 8 to 14 weightpercent isobutane; and (vi) 70 to 80 weight percent1,1,1,2-tetrafluoroethane.

In a preferred embodiment, when the composition is exposed to a flameextension test in accordance with American Society for Testing andMaterials (ASTM) D-3065-94, Sec. 4-7, the flame extension is less than18 inches.

The composition preferably does not comprise water.

This invention provides a non-flammable aerosol composition comprisingan active ingredient, solvent, and propellants. The propellantpreferably comprises a mixture of a hydrocarbon propellant such asisobutane and a non-combustible hydrofluorocarbon such as1,1,1,2-tetrafluoroethane (CF₃CH₂F) (HFC134A), which has been discoveredto produce a non-flammable composition when used with predeterminedamounts of solvent in an aerosol spray. Active ingredients include thoseuseful for pest control, i.e., insecticides such as knockdown agents,biological control agents, insect growth regulators, and repellents.

In a preferred embodiment, this invention comprises an insecticidedissolved in a solvent and pressurized with propellants in a ratio thatproduces a non-flammable spray. The composition may also containsynergists, toxicants, and insect growth regulators.

Insecticides suitable for use in this invention include pyrethrins,prallethrin, imiprothrin, d-trans allethrin, esbiol, esbiothrin,tetramethrin, and pynamin forte. A preferred insecticide for use in thisinvention is the toxicant pyrethrins in combination with the dualsynergists, piperonyl butoxide and n-octyl bicycloheptene dicarboximide.This insecticide is available from McLaughlin Gormley King Company,Minneapolis, Minn., as PYROCIDE® Intermediate 5192.

Preferred embodiments of the formulation include one or more synergists.These are compounds that act to make the insecticide more effective atlower concentrations, and include piperonyl butoxide and N-octylbicycloheptene dicarboximide.

In addition, toxicants may be present, and these include permethrin,cypermethrin, lambda-cyhalothrin, cyfluthrin, d-phenothrin,esfenvalerate and bifenthrin, and isomers thereof.

Insect growth regulators (IGR's) may also be present, and such includepyriproxyfen (NYLAR®) and methoprene.

The insecticide and any other desired ingredients are mixed with andsolubilized by a hydrocarbon carrier or solvent. Preferably, theinsecticide is miscible or completely homogeneous with no phaseseparation. Phase separation can be observed by transferring the aerosolcontents to a glass aerosol container. Suitable carriers or solventsinclude ketones, alcohols, esters, and ethers, petroleum distillates(comprising normal, iso & cyclo paraffin blends), or chlorinatedsolvents and/or mixtures of these. A preferred solvent is acetone.

A propellant is mixed with and used to deliver the active material andsolvent by spraying. The propellant blend of this invention isnon-flammable, and preferably includes two components mixed inaccordance with the phase diagram shown in FIG. 1. The first componentis isobutane and the second is 1,1,1,2-tetrafluoroethane.

Suitable hydrocarbon propellants include acetylene, methane, ethane,ethylene, propane, propene, n-butane, n-butene, isobutane, isobutene,pentane, pentene, isopentane and isopentene, dimethyl ether, and 1,1difluoroethane and mixtures thereof. Preferred hydrocarbon propellantsinclude propane, n-butane, isobutane, pentane and isopentane, and themost preferred is isobutane. A suitable non-flammable componentpropellant is 1,1,1,2-tetrafluoroethane (HFC-134a). These propellantsare preferably combined in weight ratios ranging from 0.1:1 to 0.25:1 ofhydrocarbon propellant to non-flammable propellant. Example 1 below is0.15 to 1 isobutane to HFC-134a.

The propellant mixture is combined with the solution of activeingredient and placed into a container. The proportion of solvent(containing the active ingredient) to propellant ranges from 0.1:1 to0.5:1.

The compositions of this invention are prepared by mixing theinsecticide, petroleum distillate, and any other desired additives inacetone to dissolve and disperse them. The required amount of theproduct is then added to the appropriate aerosol container and then theunits are crimped and pressurized with the designed propellant.

The pressure in a sealed container is of course determined by all of itscontents, but both organic solvents and propellants tend to beparticularly volatile, thus increasing the pressure in a closed system.The pressure in the container will have a determining effect on sprayrates. To get the desired spray rate, the pressure typically ranges from40 psig to 70 psig. The pressure in the container should remain below180 psig when warmed to 130° F., as required by the U.S. Department ofTransportation (DOT). The DOT has established certain acceptable rangesfor finished aerosol packages depending on the design strength of thecan. Currently ratings are given for steel cans as follows: 2N for canscapable of withstanding 140 psig at 130° F.; 2P for cans capable ofwithstanding 160 psig max; and 2Q for cans capable of withstanding 180psig. If higher psig results, damage, if not catastrophic failure, tothe container, may result. If the pressure exceeds the can strength,doming of the top and/or bottom of the aerosol container is observed.For example, increasing pressure beyond the structural integrity of thecontainer causes bulging of the container.

The non-flammable insecticidal aerosol of this invention is particularlyuseful for various pest control applications, such as crawling andflying insects, total release aerosols, and intermittent devices. Totalrelease aerosols are designed with a special valve and actuator systemthat when tripped will lock and will release all of its contents. Thisis used when it is desired to treat a whole room and limit the potentialexposure of the applicator. Intermittent devices or metered aerosols areused in restaurants or where food is handled to control flies andcockroaches. They are packaged in a device that has a timer mechanismthat will disperse a small amount of insecticide at predeterminedintervals.

Test Methods

Flammability

To test the flammability of a mixture, the mixture is placed into acontainer and the units are then crimped and pressurized. The units arecrimped and pressurized at room temperature via pressure filling (thruthe valve) or undercapped. The contents of the container are thensprayed at a flame and the length of the flame (if any) is measured.This test is done in accordance with ASTM D-3065-94, Sec. 4-7, wherein aflame source such as a candle is mounted on a holder. The aerosol testunit is conditioned to 70° F.+/−1°. A measuring device is aligned sothat its zero point is in line with the flame. The pressurized containerholding the material to be tested is held six inches away and sprayedtoward the flame. While discharging the unit, the spray is positioned sothat it sprays through the top third of the flame. The length of a flameproduced if the container's contents are ignited is measured andrecorded. This is replicated three times and the average of the three isreported. It is convenient, and somewhat safer, to photograph this testand examine the flame test results in this manner.

Per EPA's Code of Federal Regulation 40, Part 156.10, an aerosol is tobe labeled as non-flammable and pass the flame test if the flameextension is recorded to be less than 18 inches. It is preferred thatcompositions of the invention not produce any flame, but in fact willextinguish the flame per ASTM D-3065-94, Sec 4-7 methodology.

Pressure

Various mixtures were placed into containers and tested to determine thepressure rise when the filled container was subjected to a hot waterbath. Mixtures which “passed” this test had a pressure of less than 180psi when warmed to and held at 130° F. for 30 to 40 minutes.

The test was conducted by warming the filled aerosol test container byfully immersing it in a water bath that has been set at 130° F. The canis to be held at this temperature until temperature equilibrium isachieved (typically 30 to 40 minutes depending on the size of the can).Pressure is measured using a pressure gauge and inspection of the canintegrity is done by observing for blemishes, typical signs are domingat the top or bottom of the can.

EXAMPLES

The following materials and procedures were used for all examples:

PYROCIDE® Intermediate 5192 (commercially available from McLaughlinGormley King Company, Minneapolis, Minn. comprising 9.0 weight percentpyrethrins (CAS# 8003-34-7), 18.0 weight percent piperonyl butoxide(butylcarbityl) (6-propylpiperonyl ether) (CAS# 51-03-6), 30.0 weightpercent N-octyl bicycloheptene dicarboximide (CAS# 113-48-4) andpetroleum distillate (CAS# 64742-47-8) was mixed with acetone (CAS#67-64-1) and stirred to obtain complete uniformity. The correct amountof the solution was added to a 17 oz. 2Q aerosol container, crimped, andpressurized with the correct blend of isobutane (CAS# 68476-86-8) and1,1,1,2-tetrafluoroethane (HFC-134a) (CAS# 811-97-2). In each examplebelow, 26.7 g of Pyrocide® Intermediate 5192 was added to a 17 oz. 2Qcan.

The following examples show the amounts of each component in aformulation and the results of testing.

Example 1

Component Percent by weight PYROCIDE 5192 5.55 Acetone 5.55 Isobutane18.00 HFC-134a 70.90

This mixture of components was miscible and passed the flame test whensprayed as an aerosol. The filled 2Q can domed, when warmed to 130° F.

Example 2

Component Percent by weight PYROCIDE 5192 5.55 Acetone 14.55 Isobutane9.0 HFC-134a 70.90

This mixture of components was miscible. A seven-inch flame was observedduring the flame extension test. It passed the pressure test.

Example 3

Component Percent by weight PYROCIDE 5192 5.55 Acetone 10.00 Isobutane13.55 HFC-134a 70.90

This mixture of components was miscible and passed the flame test whensprayed as an aerosol. The filled 2Q can domed, when warmed to 130° F.

Example 4

Component Percent by weight PYROCIDE 5192 5.55 Acetone 5.55 Isobutane14.00 HFC-134a 74.90

This mixture of components was miscible and passed the flame test whensprayed as an aerosol. The filled 2Q can domed, when warmed to 130° F.

Example 5

Component Percent by weight PYROCIDE 5192 5.55 Acetone 18.90 Isobutane4.75 HFC-134a 70.80

This mixture of components was miscible and passed the flame test whensprayed as an aerosol. The filled 2Q can domed, when warmed to 130° F.

Example 6

Component Percent by weight PYROCIDE 5192 5.55 Acetone 18.90 Isobutane18.90 HFC-134a 56.70

This mixture of components was miscible and passed the pressure test. Itproduced a flame during the flame extension evaluation.

Example 7

Component Percent by weight PYROCIDE 5192 5.55 Acetone 4.75 Isobutane4.70 HFC-134a 85.00

This mixture of components produced a phase separation. It passed theflame test when sprayed as an aerosol. The filled 2Q can domed whenwarmed to 130° F.

Example 8

Component Percent by weight PYROCIDE 5192 5.55 Acetone 4.75 Isobutane18.90 HFC-134a 70.80

This mixture of components was produced a phase separation. It passedthe flame test when sprayed as an aerosol. The filled 2Q can domed, whenwarmed to 130° F.

Example 9

Component Percent by weight PYROCIDE 5192 5.55 Acetone 12.50 Isobutane11.05 HFC-134a 70.90

This mixture of components was miscible and passed the flame test whensprayed as an aerosol. The filled can exhibited no bulging and passedthe pressure test.

Example 10

Component Percent by weight PYROCIDE 5192 5.55 Acetone 14.00 Isobutane —HFC-134a 80.45

This mixture of components produced a phase separation. Passed the flametest when sprayed as an aerosol. Passed the pressure test.

Example 11

Component Percent by weight PYROCIDE 5192  5.55 Acetone — Isobutane —HFC-134a 94.45

This mixture of components was not miscible. It passed the flame testwhen sprayed as an aerosol. The filled 2Q can domed, when warmed to 130°F.

The most preferred aerosol mixtures contain about 0.01 to 9.0%insecticide, 1.0 to 30% petroleum distillate, 10 to 19% acetone, 9 to14% isobutane, and 65 to 80% HFC-134a. The most preferred embodiment isa mixture that is completely miscible (no phase separation), produces noflame in the flame extension test, and does not exceed a pressure of 180psi in the pressure test.

The above description is provided for the purpose of describingembodiments of the invention and is not intended to limit the scope ofthe invention in any way. It will be apparent to those skilled in theart that various modifications and variations can be made withoutdeparting from the spirit or scope of the invention. Thus, it isintended that the present invention cover the modifications andvariations of this invention provided they come within the scope of theappended claims and their equivalents.

1. A non-flammable aerosol insecticidal composition comprising: (i) 0.01to 20 weight percent of one or more insecticides; (ii) 5 to 25 weightpercent of one or more compounds selected from the group consisting ofacetone, methyl ethyl ketone, and C₁- to C₈-alcohol; (iii) 5 to 30weight percent of one or more compounds selected from the groupconsisting of hydrocarbon propellants, dimethyl ether, and1,1-difluoroethane; and (iv) 60 to 90 weight percent of one or morenon-combustible hydrofluorocarbons.
 2. The non-flammable aerosolinsecticidal composition of claim 1, wherein the composition comprises:(i) 0.01 to 20 weight percent of one or more insecticides; (ii) 5 to 25weight percent acetone; (iii) 5 to 30 weight percent of one or morecompounds selected from the group consisting of hydrocarbon propellants,dimethyl ether, and 1,1-difluoroethane; and (iv) 60 to 90 weight percentof one or more non-combustible hydrofluorocarbons.
 3. The non-flammableaerosol insecticidal composition of claim 1, wherein the compositioncomprises: (i) 1 to 10 weight percent of one or more insecticides; (ii)5 to 20 weight percent acetone; (iii) 5 to 20 weight percent of one ormore compounds selected from the group consisting of hydrocarbonpropellants, dimethyl ether, and 1,1-difluoroethane; (iv) 65 to 85weight percent of one or more non-combustible hydrofluorocarbons.
 4. Thenon-flammable aerosol insecticidal composition of claim 1, wherein thecomposition comprises one or more insecticides selected from the groupconsisting of knockdown agents, toxicants, synergists, and insect growthregulators.
 5. The non-flammable aerosol insecticidal composition ofclaim 1, wherein the composition comprises one or more insecticidesselected from the group consisting of pyrethrins, prallethrin,imipothrin, d-trans allethrin, esbiol, esbiothrin, tetramethrin, pynaminforte, permethrin, cypermethrin, lambda-cyhalothrin, cyfluthrin,d-phenothrin, esfenvalerate, bifenthrin, piperonyl butoxide, n-octylbicycloheptene dicarboximide, pyriproxyfen, methoprene, and isomersthereof.
 6. The non-flammable aerosol insecticidal composition of claim1, wherein the composition comprises pyrethrins.
 7. The non-flammableaerosol insecticidal composition of claim 1, wherein the compositioncomprises pyrethrins and piperonyl butoxide.
 8. The non-flammableaerosol insecticidal composition of claim 1, wherein the compositioncomprises pyrethrins, piperonyl butoxide, and n-octyl bicycloheptenedicarboximide.
 9. The non-flammable aerosol insecticidal composition ofclaim 1, wherein the composition comprises 1,1,1,2-tetrafluoroethane.10. The non-flammable aerosol insecticidal composition of claim 1,wherein the composition comprises pyrethrins, piperonyl butoxide,n-octyl bicycloheptene dicarboximide, and 1,1,1,2-tetrafluoroethane. 11.The non-flammable aerosol insecticidal composition of claim 2, whereinthe composition comprises pyrethrins, piperonyl butoxide, n-octylbicycloheptene dicarboximide, and 1,1,1,2-tetrafluoroethane.
 12. Thenon-flammable aerosol insecticidal composition of claim 3, wherein thecomposition comprises pyrethrins, piperonyl butoxide, n-octylbicycloheptene dicarboximide, and 1,1,1,2-tetrafluoroethane.
 13. Thenon-flammable aerosol insecticidal composition of claim 1, wherein thecomposition comprises one or more hydrocarbon propellants selected fromthe group consisting of acetylene, methane, ethane, ethylene, propane,propene, n-butane, isobutane, isobutene, pentane, pentene, isopentane,and isopentene.
 14. The non-flammable aerosol insecticidal compositionof claim 1, wherein the composition comprises one or more hydrocarbonpropellants selected from the group consisting of isobutane, propane,and n-butane.
 15. The non-flammable aerosol insecticidal composition ofclaim 1, wherein the composition comprises isobutane.
 16. Thenon-flammable aerosol insecticidal composition of claim 10, furthercomprising isobutane.
 17. The non-flammable aerosol insecticidalcomposition of claim 11, further comprising isobutane.
 18. Thenon-flammable aerosol insecticidal composition of claim 12, furthercomprising isobutane.
 19. A non-flammable aerosol insecticidalcomposition comprising: (i) 0.1 to 5 weight percent pyrethrins; (ii) 0.1to 10 weight percent of one or more synergists; (iii) 7 to 20 weightpercent acetone; (iv) 7 to 15 weight percent isobutane; (v) 60 to 80weight percent 1,1,1,2-tetrafluoroethane.
 20. A non-flammable aerosolinsecticidal composition comprising: (i) 0.1 to 1 weight percentpyrethrins; (ii) 0.5 to 2 weight percent piperonyl butoxide; (iii) 1 to2 weight percent n-octyl bicycloheptene dicarboximide; (iv) 10 to 20weight percent acetone; (v) 8 to 14 weight percent isobutane; (vi) 70 to80 weight percent 1,1,1,2-tetrafluoroethane.
 21. The non-flammableaerosol insecticidal composition of claim 1, wherein when thecomposition is exposed to a flame extension test in accordance withAmerican Society for Testing and Materials (ASTM) D-3065-94, Sec. 4-7,the flame extension is less than 18 inches.
 22. The non-flammableaerosol insecticidal composition of claim 2, wherein when thecomposition is exposed to a flame extension test in accordance with ASTMD-3065-94, Sec. 4-7, the flame extension is less than 18 inches.
 23. Thenon-flammable aerosol insecticidal composition of claim 3, wherein whenthe composition is exposed to a flame extension test in accordance withASTM D-3065-94, Sec. 4-7, the flame extension is less than 18 inches.24. The non-flammable aerosol insecticidal composition of claim 10,wherein when the composition is exposed to a flame extension test inaccordance with ASTM D-3065-94, Sec. 4-7, the flame extension is lessthan 18 inches.
 25. The non-flammable aerosol insecticidal compositionof claim 11, wherein when the composition is exposed to a flameextension test in accordance with ASTM D-3065-94, Sec. 4-7, the flameextension is less than 18 inches.
 26. The non-flammable aerosolinsecticidal composition of claim 12, wherein when the composition isexposed to a flame extension test in accordance with ASTM D-3065-94,Sec. 4-7, the flame extension is less than 18 inches.
 27. Thenon-flammable aerosol insecticidal composition of claim 16, wherein whenthe composition is exposed to a flame extension test in accordance withASTM D-3065-94, Sec. 4-7, the flame extension is less than 18 inches.28. The non-flammable aerosol insecticidal composition of claim 17,wherein when the composition is exposed to a flame extension test inaccordance with ASTM D-3065-94, Sec. 4-7, the flame extension is lessthan 18 inches.
 29. The non-flammable aerosol insecticidal compositionof claim 18, wherein when the composition is exposed to a flameextension test in accordance with ASTM D-3065-94, Sec. 4-7, the flameextension is less than 18 inches.
 30. The non-flammable aerosolinsecticidal composition of claim 19, wherein when the composition isexposed to a flame extension test in accordance with ASTM D-3065-94,Sec. 4-7, the flame extension is less than 18 inches.
 31. Thenon-flammable aerosol insecticidal composition of claim 20, wherein whenthe composition is exposed to a flame extension test in accordance withASTM D-3065-94, Sec. 4-7, the flame extension is less than 18 inches.32. The non-flammable aerosol insecticidal composition of claim 1,wherein the composition does not comprise water.